#405F91
Closest named color: Dusky Blue (#475F94). oklch(48.5% 0.089 259.6), rgb(64, 95, 145).
Aa
White text reads best on this color (6.43:1).
About this color
#405F91 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 48%, its chroma 0.089 and its hue 260°. Its hue sits on the cool side of the wheel. The nearest named color is Dusky Blue (#475F94), ΔE 0.010 away. White text reads best on it, at 6.43:1.
| Hue family | Blues |
| Lightness | medium-dark (48%) |
| Chroma | moderately saturated (0.089) |
| Temperature | cool |
| Nearest name | Dusky Blue (#475F94) |
| Black text | 3.26:1 |
| White text | 6.43:1 |
Values
| HEX | #405F91 |
| RGB | rgb(64, 95, 145) |
| HSL | hsl(217, 39%, 41%) |
| OKLCH | oklch(48.5% 0.089 259.6) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #405F91 | 6.43:1 | AA | Lc -86.9 | Fine for body text |
| Black text on #405F91 | 3.26:1 | AA large text | Lc 22.2 | Dividers and decoration only |
| #405F91 text on white | 6.43:1 | AA | Lc 81.8 | Fine for body text |
| #405F91 text on black | 3.26:1 | AA large text | Lc -20.1 | Dividers and decoration only |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 700.
-
Step 50
50
#F3F6F9
oklch(97.2% 0.005 247.9)
-
Step 100
100
#E5EAF2
oklch(93.6% 0.012 259.8)
-
Step 200
200
#D0DAE9
oklch(88.5% 0.023 258.4)
-
Step 300
300
#B1C2DD
oklch(81% 0.043 259.6)
-
Step 400
400
#87A2CC
oklch(70.7% 0.069 259.1)
-
Step 500
500
#6A8ABF
oklch(63.1% 0.088 260.2)
-
Step 600
600
#5174AB
oklch(55.7% 0.095 259.2)
-
Step 700
700 (this color)
#405F91
oklch(48.5% 0.089 259.6)
-
Step 800
800
#364F77
oklch(42.6% 0.074 259.5)
-
Step 900
900
#2F4260
oklch(37.7% 0.057 259.3)
-
Step 950
950
#1C2738
oklch(27.1% 0.035 258.9)
#405F91 with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #4B6393 | 0.019 |
| Deuteranopia (no green cones) | #415B90 | 0.011 |
| Tritanopia (no blue cones) | #0F6A71 | 0.080 |
| Achromatopsia (no color) | #5F5F5F | 0.089 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #405F91
#405F91
oklch(48.5% 0.089 259.6)
- #795819
#795819
oklch(48.3% 0.089 79.4)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #405F91, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusky Blue #475F94 ΔE 0.010
- Denim Blue #3B5B92 ΔE 0.014
- Denim #3B638C ΔE 0.017
- Light Navy Blue #2E5A88 ΔE 0.029
- Dusk #4E5481 ΔE 0.038
- Twilight #4E518B ΔE 0.041
- Peacock Blue #016795 ΔE 0.041
- YInMn Blue #415A77 ΔE 0.042
Use #405F91 in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.